28533336473 has 4 divisors (see below), whose sum is σ = 28741609140. Its totient is φ = 28325063808.

The previous prime is 28533336457. The next prime is 28533336487. The reversal of 28533336473 is 37463333582.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21770412304 + 6762924169 = 147548^2 + 82237^2 .

It is a cyclic number.

It is not a de Polignac number, because 28533336473 - 2⁴ = 28533336457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28533336413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104136128 + ... + 104136401.

It is an arithmetic number, because the mean of its divisors is an integer number (7185402285).

Almost surely, 2^28533336473 is an apocalyptic number.

It is an amenable number.

28533336473 is a deficient number, since it is larger than the sum of its proper divisors (208272667).

28533336473 is a wasteful number, since it uses less digits than its factorization.

28533336473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208272666.

The product of its digits is 3265920, while the sum is 47.

The spelling of 28533336473 in words is "twenty-eight billion, five hundred thirty-three million, three hundred thirty-six thousand, four hundred seventy-three".